LIST OF PLATES. 



PLATE FACING PAGE 



I, Basic Dykes, Bkoclesia . . . . . " . . .10 



II. Basic Dykes, Bkoclesia ........ 15 



III. Jaw-structures in Conulus ....... 74 



IV. Fossil Myriopods from tke Middle Coal-measures near Bockdale 76 



V. Fossil Myriopods from tke Middle Coal-measures near Bockdale 80 



VI. View near Port a' Ckotain, skowing preglacial platform of 



marine erosion ......... 97 



VII. New Species of Thenops ........ 120 



VIII. Upper Devonian Artkrodira from Okio, U.S.A. . . .128 



IX. New Ckalk Polyzoa 153 



X. New Ckalk Polyzoa .154 



XL Nepkeline-syenite and Badial Apatite ..... 196 

 XII. Grapkic Intergrowtk : Mica and Calcite, also Calcite witk 



Olivine and Magnetite . . . . . . . 200 



XIII. Arrangement of Plates in Pkyllodes of some Fossil Eckinoidea . 265 



XIV. Stormbergia Gardneri, gen. et sp. nov.; Cypkergat, Cape Colony 298 

 XV. Helminthochiton thraivensis, sp. nov. ..... 339 



XVI. Granite witk Quartz Veins, Foxdale, Isle of Man . . . 347 

 XVII. Synclinal Fold, nortk of Bude, Hartland District . . .366 



XVIII. Map of tke Bermuda Islands 385 



XIX. Sand-dunes anckored by Sea-lavender and by Indigo-berry, 



Bermuda ......•••• 388 



XX. Becent Landslip, Kempe's Bay, Bermuda. Serpuline Atolls, 



Soutk Skore, Bermuda 394 



XXI. Deep Cut. Pinnacles, iEolian Bock. Pinnacle, iEolian Bock. 



(Bermuda.) 439 



XXII. Pot-koles in process of formation. Pseudo-palmetto Stump. 



Beticulated Hard Limestone. (Bermuda.) . . . 440 



XXIII. Grey Bock, and Pkospkorite witk Staff elite, Bermuda . . 442 



XXIV. Cretaceous Terebelloid Worm-Tubes 487 



XXV. Jaws of Britisk Fossil Skrews 539 



